The chlorine in salt can degrade wood, causing a condition referred to as salt kill, especially in marine areas such as this site at Myrtle Beach, S.C. The resulting fuzzy or stringy wood surface is considered unsightly by some, but the structure of the wood often remains sufficient for its purpose. Water-borne preservatives that contain water repellents, such as wax, can help minimize the risk of salt kill. (MSU Ag Communications file photo)